Writing Ruby code that uses threads is a great way to get better performance and improve your app’s user experience. It can also be quite daunting due to the often-feared “concurrency bugs”. In this talk, recorded at the Fullstack LX Ruby meetup, I introduce a number of pitfalls to watch out for, presenting correct (and fast!) alternatives for each.

https://ivoanjo.me/blog/2018/10/13/spotting-unsafe-ruby-patterns/